efuse: Fix load_efuses_from_flash when FE is on

esp_efuse_utility_load_efuses_from_flash() read emul_efuse
as an encrypted partition, but that is not correct,
this partition was never encrypted.
Need to read it as not encrypted partition.

Fxed the case: If FE is already on then EFUSE VIRT mode can work with it.

Closes https://github.com/espressif/esp-idf/issues/10929

components/hal/include/hal/efuse_hal.h

@@ -26,6 +26,15 @@ void efuse_hal_get_mac(uint8_t *mac);
  */
 uint32_t efuse_hal_chip_revision(void);
 
+/**
+ * @brief Is flash encryption currently enabled in hardware?
+ *
+ * Flash encryption is enabled if the FLASH_CRYPT_CNT efuse has an odd number of bits set.
+ *
+ * @return true if flash encryption is enabled.
+ */
+bool efuse_hal_flash_encryption_enabled(void);
+
 /**
  * @brief Returns major chip version
  */